Zoya Akhtar’s next project is based on the relationship between a brother and sister and who better than Farhan to write the dialogues for the film? It is said to go on the floors later this year and sources say the actor-director is concentrating on finishing his final draft. In the past too, Farhan has penned dialogues for Zoya’s films including Luck By Chance and Zindagi Na Milegi Dobara.